Most likely an automated program. There were institutional holders in mob before it had its ipo. My guess is its one of these guys trying to offload bit by bit in a non liquid market without driving the price down too much (which is why sell order is removed at end of day). The sell off began on day 1 of IPO but the largest institutional holder only had approx 10 million shares so they should be running dry soon
MOB Price at posting:
9.0¢ Sentiment: None Disclosure: Held